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Diff of /sml/trunk/HISTORY

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revision 676, Sat Jun 24 03:37:03 2000 UTC revision 697, Tue Aug 8 03:33:13 2000 UTC
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13  Description:  Description:
14  ----------------------------------------------------------------------  ----------------------------------------------------------------------
15  Name: Matthias Blume  Name: Matthias Blume
16    Date: 2000/08/08 12:33:00 JST
17    Tag: blume-20000808-manual
18    Description:
19    
20    Tiny update to CM manual.
21    
22    ----------------------------------------------------------------------
23    Name: Allen Leung
24    Date: 2000/08/7 19:31:00
25    Tag: leunga-20000807-a-whole-bunch-of-stuff
26    
27      Moby, C--, SSA, x86, machine descriptions etc.  Should only affect C--
28    and Mobdy.
29    
30    1.  x86
31    
32       a.  Fixes to peephole module by John and Dan.
33       b.  Assembly fix to SETcc by Allen.
34       c.  Fix to c-call by John.
35       d.  Fix to spilling by John.  (This one deals with the missing FSTPT case)
36       e.  Instruction selection optimization to SETcc as suggested by John.
37    
38           For example,
39    
40            MV(32, x, COND(32, CMP(32, LT, a, b), LI 1, LI 0))
41    
42           should generate:
43    
44            MOVL a, x
45            SUBL b, x
46            SHRL 31, x
47    
48    2.  IR stuff
49    
50         A bunch of new DJ-graph related algorithms added.  These
51         speed up SSA construction.
52    
53    3.  SSA + Scheduling
54    
55         Added code for SSA and scheduling to the repository
56    
57    ----------------------------------------------------------------------
58    Name: Lal George
59    Date: 2000/07/27 11:53:14 EDT
60    
61    Tag: lal-20000727-linux-ppc
62    Description:
63    
64     Made changes to support Linux PPC.
65     p.s. I have confirmation that the 110.29 boot files work fine.
66    
67    ----------------------------------------------------------------------
68    Name: Matthias Blume
69    Date: 2000/07/27 17:40:00 JST
70    Tag: blume-20000727-scripts
71    Description:
72    
73    !!!! WARNING !!!!
74    You must recompile the runtime system!
75    !!!! WARNING !!!!
76    
77    This is basically another round of script-enhancements:
78    
79    1. sml, ml-build, and ml-makedepend accept options -D and -U to define
80       and undefine CM preprocessor symbols.
81    
82    2. ml-build avoids generating a new heap image if it finds that the
83       existing one is still ok.  (The condition is that no ML file had to
84       be recompiled and all ML files are found to be older that the heap
85       file.)
86    
87       To make this work smoothly, I also hacked the runtime system as
88       well as SMLofNJ.SysInfo to get access to the heap image suffix
89       (.sparc-solaris, ...) that is currently being used.
90    
91       Moreover, the signature of CM.mk_standalone has changed.  See the
92       CM manual.
93    
94    3. ml-makedepend accepts additional options -n, -a, and -o.  (See the
95       CM manual for details.)
96    
97    4. More CM manual updates:
98        - all of the above has been documented.
99        - there is now a section describing the (CM-related) command line
100          arguments that are accepted by the "sml" command
101    
102    ----------------------------------------------------------------------
103    Name: Matthias Blume
104    Date: 2000/07/25 16:20:00 JST
105    Tag: blume-20000725-makedepend
106    Description:
107    
108    Added a script called ml-makedepend.  This can be used in makefiles
109    for Unix' make in a way very similar to the "makedepend" command for
110    C.
111    
112    The script internally uses function CM.sources.
113    
114    Synopsis:
115    
116        ml-makedepend [-f makefile] cmfile targetname
117    
118    The default for the makefile is "makefile" (or "Makefile" should
119    "makefile" not exist).
120    
121    ml-makedepend adds a cmfile/targetname-specific section to this
122    makefile (after removing the previous version of this section).  The
123    section contains a single dependency specification with targetname on
124    the LHS (targetname is an arbitrary name), and a list of files derived
125    from the cmfile on the RHS.  Some of the files on the RHS are
126    ARCH/OPSYS-specific.  Therefore, ml-makedepend inserts references to
127    "make" variables $(ARCH) and $(OPSYS) in place of the corresponding
128    path names.  The makefile writer is responsible for making sure that
129    these variables have correct at the time "make" is invoked.
130    
131    ----------------------------------------------------------------------
132    Name: Matthias Blume
133    Date: 2000/07/22 23:30:00 JST
134    Tag: blume-20000722-urlupdate
135    Description:
136    
137    Changed BOOT and config/srcarchiveurl to point to BL server:
138    
139        ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.29/
140    
141    ----------------------------------------------------------------------
142    Name: Matthias Blume
143    Date: 2000/07/18 18:00:00 JST
144    Tag: blume-20000718-Version_110_29
145    Description:
146    
147    1. Updated src/compiler/TopLevel/main/version.sml to version 110.29
148    
149    2. Updated config/version to 110.29
150    
151    3. Updated config/srcarchiveurl
152    
153    3. New boot files!
154       ftp://ftp.cs.princeton.edu/pub/people/blume/sml/110.29-autofetch
155    
156    ----------------------------------------------------------------------
157    Name: Matthias Blume
158    Date: 2000/07/11 13:58:00 JST
159    Tag: blume-20000711-doctypo
160    Description:
161    
162    Fixed a few typos in CM manual.
163    
164    ----------------------------------------------------------------------
165    Name: Allen Leung
166    Date: 2000/06/15 00:38:00
167    Tag: leunga-20000704-sparc-x86
168    
169    1. x86 peephole improvement sp += k; sp -= k => nop  [from John]
170    2. fix to x86 RET bug [found by Dan Grossman]
171    3. sparc assembly bug fix for ticc instructions [found by Fermin]
172    
173       Affects c-- and moby only
174    
175    ----------------------------------------------------------------------
176    Name: Matthias Blume
177    Date: 2000/07/04 15:26:00
178    Tag: blume-20000704-trigger
179    Description:
180    
181    1. Improvements to CM manual.
182    2. SMLofNJ.Internals.BTrace.trigger reinstated as an alternative way
183       of getting a back-trace.  The function, when called, raises an
184       internal exception which explicitly carries the full back-trace history,
185       so it is unaffected by any intervening handle-raise pairs ("trivial"
186       or not).  The interactive loop will print that history once it arrives
187       at top level.
188       Short of having all exceptions implicitly carry the full history, the
189       recommended way of using this facility is:
190         - compile your program with instrumentation "on"
191         - run it, when it raises an exception, look at the history
192         - if the history is "cut off" because of some handler, go and modify
193           your program so that it explicitly calls BTrace.trigger
194         - recompile (still instrumented), and rerun; look at the full history
195    
196    ----------------------------------------------------------------------
197    Name: Matthias Blume
198    Date: 2000/07/03 15:36:00 JST
199    Tag: blume-20000702-manual
200    Description:
201    
202    Small corrections and updates to CM manual.
203    
204    ----------------------------------------------------------------------
205    Name: Matthias Blume
206    Date: 2000/06/29 16:04:00 JST
207    Tag: blume-20000629-yacctool
208    Description:
209    
210    Changes:
211    
212    1. Class "mlyacc" now takes separate arguments to pass options to
213       generated .sml- and .sig-files independently.
214    2. Corresponding CM manual updates.
215    3. BTrace module now also reports call sites.  (However, for loop clusters
216       it only shows from where the cluster was entered.)  There are associated
217       modifications to core.sml, internals.{sig,sml}, btrace.sml, and btimp.sml.
218    
219    ----------------------------------------------------------------------
220    Name: Matthias Blume
221    Date: 2000/06/27 16:51:00 JST
222    Tag: blume-20000627-noweb
223    Description:
224    
225    Changes:
226    
227     1. Implemented "subdir" and "witness" options for noweb tool.
228        This caused some slight internal changes in CM's tool implementation.
229     2. Fixed bug in "tool plugin" mechanism.  This is essentially cleaning
230        some remaining issues from earlier path anchor changes.
231     3. Updated CM manual accordingly.
232    
233     4. Changed implementation of back-tracing so that I now consider it
234        ready for prime-time.
235    
236        In particular, you don't have to explicitly trigger the back-trace
237        anymore.  Instead, if you are running BTrace-instrumented code and
238        there is an uncaught exception (regardless of whether or not it was
239        raised in instrumented code), the top-level evalloop will print
240        the back-trace.
241    
242        Features:
243    
244          - Instrumented and uninstrumented code work together seemlessly.
245            (Of course, uninstrumented code is never mentioned in actual
246             back-traces.)
247    
248          - Asymptotic time- and space-complexity of instrumented code is
249            equal to that of uninstrumented code.  (This means that
250            tail-recursion is preserved by the instrumentation phase.)
251    
252          - Modules whose code has been instrumented in different sessions
253            work together without problem.
254    
255          - There is no penalty whatsoever on uninstrumented code.
256    
257          - There is no penalty on "raise" expressions, even in
258            instrumented code.
259    
260        A potential bug (or perhaps it is a feature, too):
261    
262          A back-trace reaches no further than the outermost instrumented
263          non-trivial "raise".  Here, a "trivial" raise is one that is the
264          sole RHS of a "handle" rule.  Thus, back-traces reach trough
265    
266               <exp> handle e => raise e
267    
268          and even
269    
270               <exp> handle Foo => raise Bar
271    
272          and, of course, through
273    
274               <exp> handle Foo => ...
275    
276         if the exception was not Foo.
277    
278         Back-traces always reach right through any un-instrumented code
279         including any of its "handle" expressions, trivial or not.
280    
281       To try this out, do the following:
282    
283         - Erase all existing binfiles for your program.
284           (You may keep binfiles for those modules where you think you
285            definitely don't need back-tracing.)
286         - Turn on back-trace instrumentation:
287              SMLofNJ.Internals.BTrace.mode (SOME true);
288         - Recompile your program.  (I.e., run "CM.make" or "use".)
289         - You may now turn instrumentation off again (if you want):
290              SMLofNJ.Internals.BTrace.mode (SOME false);
291         - Run your program as usual.  If it raises an exception that
292           reaches the interactive toplevel, then a back-trace will
293           automatically be printed.  After that, the toplevel loop
294           will print the exception history as usual.
295    
296    ----------------------------------------------------------------------
297    Name: Matthias Blume
298    Date: 2000/06/26 09:56:46 JST
299    Tag: blume-20000626-setup
300    Description:
301    
302    CM: - setup-parameter to "sml" added; this can be used to run arbitrary
303          ML code before and after compiling a file (e.g., to set compiler
304          flags)
305    
306    Compiler: - improved btrace API (in core.sml, internals.{sig,sml})
307              - associated changes to btrace.sml (BTrace instrumentation pass)
308              - cleaner implementation of btimp.sml (BTrace tracing and report
309                module)
310    
311    CM manual: * new path encoding documented
312               * description of setup-parameter to "sml" added
313    
314    The biggest user-visible change to back-tracing is that it is no
315    longer necessary to compile all traced modules within the same
316    session.  (This was a real limitation.)
317    
318    ----------------------------------------------------------------------
319    Name: Matthias Blume
320  Date: 2000/06/24 12:40:00 JST  Date: 2000/06/24 12:40:00 JST
321  Tag: blume-20000624-startup  Tag: blume-20000624-startup
322  Description:  Description:

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